How do I get Mr. Sharps quest?

[blackmane]

I think there are three quests involving Sharp and until now I only did the one involving Henry Morgan. How can I do the other ones (like chasing sharp himself around the caribbean or killing his spy). I mean, how do I start them? I don't think they are available after I stole pearls for henry morgan?

 

[Talisman]

For Search for Sharp's spy - Go to Pearl Divers village and talk to the Spanish Officer in charge ( he is in one of the houses )

You can do it after you have stolen Pearls for Morgan

 

[blackmane]

I think someone has to mention the name Sharp first or else he only tells you to stay away from his pearls. And that quest to steal the pearls for yourself?